This happens to me all the time! There is a sort of blurred line of semi-lucid or lucid-like vividness in these dreams, and sometimes I will even exhibit dream control skills. The big turning point for me is always when I do an RC. Then everything surges into focus and I'm completely "there". When I was younger and I used to have lots of LDs, I feel like most of my DILDs were triggered by awareness of that "there" feeling more than dream signs or anything. So I think these are the types of dreams that it is much easier to become lucid in.